The Deep Decarbonization Pathways Project (DDPP) is a collaborative initiative led by SDSN and IDDRI that brings together 13 country teams representing over 75% of global emissions to develop practical national pathways to decarbonize their economies by 2050 in line with limiting warming to 2°C; the DDPP will publish reports in 2014 and 2015 analyzing decarbonization pathways for each country and recommendations to support implementation of strategies globally.